Question: Did the brother of Matilda of Habsburg have kids?
Paraphrase: How many offsprings did the brother of Matilda of Habsburg have?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q2635513 wdt:P3373 ?X . ?X wdt:P40 ?answer}
Answer: Wenceslaus III of Bohemia, Elizabeth of Bohemia, Anne of Bohemia, Margaret of Bohemia, Duchess of Wroclaw, Agnes of Bohemia, Frederick the Fair, Albert II, Duke of Austria, Rudolf I of Bohemia, Leopold I, Duke of Austria, Agnes of Austria, Otto, Duke of Austria, Henry the Friendly, Catherine of Austria, Duchess of Calabria, Anne of Austria, Margravine of Brandenburg, Elisabeth of Austria, Gutta von Oettingen, John Parricida, Charles I of Hungary, Clementia of Hungary, Beatrice of Hungary, Dauphine of Viennois, Albert II of Saxe-Wittenberg, Rudolf I, Elisabeth of Saxe-Wittenberg, Anna of Saxe-Wittenberg